CD57+/CD3- absolute cell count

CD57+/CD3- cells are a subset of NK cells. Their exact function is not well understood but differentiates them from CD56+ NK cells. The absolute number of CD57+/CD3- cells is low in patients suffering from chronic Lyme disease [Stricker et al. 2001].
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Whole blood-based tests : 2 ml whole blood in EDTA tube. Keep at ambient temperature or 4°C. Stable for 48 hours. Do not freeze